A unit hand informs, 'Ranbir and Katrina possess a great sense of humour. The duo make jokes at a drop of hat. Their one-liners can have you in splits. It is this off the set chemistry that has come across on-screen too.'

The comic sequences have turned out to be simply hilarious. In fact the unit could not help control their laughter while the comic scenes were being shot. 'Not only director Rajkumar Santoshi and producer Ramesh Taurani but also the entire crew would break into laughter.'

The unit had become like this one big family. 'We had become so attached by the end of it that tears would well up in our eyes when we'd watch Katrina and Ranbir do a emotional scene. But we all kept quiet about it', adds the source.

After hearing about their off-screen chemistry, we can't wait anymore to see their on-screen Dhamal! What say?